hmatrix-0.5.1.1: Linear algebra and numerical computations

Portability uses gnuplot and ImageMagick provisional Alberto Ruiz (aruiz at um dot es)

Graphics.Plot

Description

Very basic (and provisional) drawing tools using gnuplot and imageMagick.

This module is deprecated. It will be replaced by improved drawing tools based on the Gnuplot package by Henning Thielemann.

Synopsis

# Documentation

mplot :: [Vector Double] -> IO ()Source

plots several vectors against the first one

plot :: [Vector Double -> Vector Double] -> (Double, Double) -> Int -> IO ()Source

Draws a list of functions over a desired range and with a desired number of points

``` > plot [sin, cos, sin.(3*)] (0,2*pi) 1000
```

parametricPlot :: (Vector Double -> (Vector Double, Vector Double)) -> (Double, Double) -> Int -> IO ()Source

Draws a parametric curve. For instance, to draw a spiral we can do something like:

``` > parametricPlot (\t->(t * sin t, t * cos t)) (0,10*pi) 1000
```

splot :: (Matrix Double -> Matrix Double -> Matrix Double) -> (Double, Double) -> (Double, Double) -> Int -> IO ()Source

Draws the surface represented by the function f in the desired ranges and number of points, internally using `mesh`.

``` > let f x y = cos (x + y)
> splot f (0,pi) (0,2*pi) 50
```

Draws a 3D surface representation of a real matrix.

``` > mesh (hilb 20)
```

In certain versions you can interactively rotate the graphic using the mouse.

From vectors x and y, it generates a pair of matrices to be used as x and y arguments for matrix functions.

writes a matrix to pgm image file

imshow shows a representation of a matrix as a gray level image using ImageMagick's display.